Sheet-trimming machine.



C. L. LILLEBERG.

SHEET TRIMMING MACHINE.

APPLICATION FILED MAR.24,1913.

1,120,394. Patented Dec.8,1914.

CHARLES L. LILLEBERG, 0F CHICAGO, ILLINOIS.

'SHEET-TRIMIVIING MACHINE.

Specification of Letters Patent.

'Patented' Dec. 8,1914.

Applicationy filed` March 24, 1913. lSeria1-1\To..'7562619.

To all whom t may concern lBe it known that I, CHARLES L. LILLir BERG, citizen of the United States, residing at Chicago, in the county of Cook and vState of Illinois, have invented a certain new and useful Improvement in Sheet-Trimming Machines, of which the following is a full, clear, concise, and exact description, refer'- ence being had to the accompanying drawings, forming apart of this specification.

My invention relates to machines for trimming the longitudinal edgeportions of thin flexible sheet material such as paper and is of particular service in connection with the preparation of papeiwth-atis to be operated upon -by perforating mechanism .employed in making `perforated sheet music, though the invention is not pto be :limited to this service. Ihave .foundthat `as the paperis fed .tothe-perforating machine it followsa slightly sinuous path,'itibeingvimpossible to cause itto travelin anexactlystraight line. The paper, as kit is .fed `to the perforating machine, thus shifts laterally in its direction of travel dueto .the uneven tension of the paper itself, it being impossible to produce the paper of uniformtension. That is,.the paper is more taut inparts than it is in other parts, a feature that obviously will cause theA paper to feed unevenly.

.In `practising my'invention I. employ two cutter rollers between which the paper is fed to the perforating machine, in combination with means vfor properly directing the paper with respect to these `rollers so thatthe rollers may operate thereupon to trim the .longitudinal edges of the sheet passing `to the rperforating machine, the trimmed, sheet passingthe perforating machine moving in a substantially straight line or single vertical plane of travel, whereby the various `rows of perforations are in straight lines rather than in ,sinuous lines as was hitherto thecase. Thus I amenabled to produce `sheet music which .will properly track upon the tracker boards of the musical instruments in connection with which -it is used and I am also enabled to produce sheet music `which will wind and unwind evenly, an'advantagetthat is of especial utility in connection with the rewinding of the f sheet music which is done atxa high rate of speed compared=with the unwinding oflthe sheet. As the paper passes from onegspool to the other it will move'in a substantially` single.y plane so; that the edges of the paper will not become frayed, hemmed or cracked.

' I will explain my invention more fully by reference to the accompanying drawing showing the preferre'clembodiment thereof and in which- Figure 1 is a view in elevation, partially in section, ,of a machine constructed in `accordance `with the invention; Fig. 2 is a sectional elevation of part of the 4structure illustrated in Fig. 1 Fig. 8 is a plan view` of part of'the structure illustratedin Fig. 1

and Fig. 4 is a view on .a smaller scale of one of the structural partsshownin. Fig. 1.

Like parts are indicated by similar charactersof referencethroughout the different figures. The paper tobe trimmed and perforated is disposed upon a supply spool 1 from which it is fed or4 drawnbetween cuttery rolls 2 and 3, the paper after beingtrimmedpassing underneath and `in .contact with a grooved cylindrical cutter roller 4 forming aipart of the preferred form of cuttingfmachine which I employ but to `which cutting machine the invention is not to be restricted, such` a cutting machine.beingillustrated in Patent 854,822, Ygranted to A. L. Hart, May 28,1907. 'l`lie.meclianism for drawingthe paper f-rom between the cutter rollers is locatedat the right ofthe cutting cylinder Lland is so well known .as not to require illustration. A suitable braking appliance is. applied to the spool 1 so that the paper as it is drawnbetween thecutter rolls 2, 3 is placed under sulicient tension properly to besubjectto the action of thefcutter rolls, Sucha braking device being illustrated in Fig. 4. .In Fig. 4 one end wall ofthe spool 1 is zgroovedto receivea cord 5 anchored at its right hand end tothe frame of the machine and at its left handend carrying a number `of `removable weights 6, these weights being .reduced in number as the paper is withdrawn from the. spool 1 so as to render 4the tension upon ,the paper being fed betweenfthecutter rolls sutliciently substantially uniform. The axes of the spool 1, cutter roller 3, and cylinder-4 are so relatively located that a bight is formed by the cutter roller in the paper whichis being trimmed, the cutter' roller 3 being .within thebijght While the. cutter roller 2 is withoutthe bight. Thisbight inthe paper that is being tautly drawn from between the rollers 2, 3 serves so to present the paper to the cutting portions of the rollers as most effectively to trim the longitudinal edges of the passing sheet.` rlhe cutter roller located within the bight is a male cutter roller and the cutter roller without the bight is a female cutter roller, thislatter cutter roller having iianges 7 spaced apart a distance to receive the roller 3, the edges of the roller 3 and the adjacent edges of the flanges 7 constituting cutting edges which `cope'rate to trim the longitudinal margins of theV paper as indicated most clearly in'- Fig. 3, the marginal strips unde'rgoingfremoval being indicated at 3. IThe paperbeing passed between the cutter rolls serves to turn both -cutter rollers which are preferably unprovided with any'other driving means, the mountings for both ends of eachI cutterroller being similar to that shown in Fig. 2. The roller 2 preferably operates by gravity to perform its function. The lower roller has a fixed axis of rotation which is determined 'by the pivot screws 9. The screws 9 are adjustable longitudinally ofthe roller -3 so as to dene the location of the lines along which the trimming of the paper is to take place. rIhe adjustment of the roller 3 is automatically accompanied by a correspondingv adjustment of the roller 2 owing'to the interposition of thefroller 3 between the lianges 7 of the roller 2. l.7l/Thenthe desired adjustment has been secured it is maintained by the clamping nuts l0. lt is obvious vthat the adjustment of the rollers 2 and 3' may be effected while the paper is traveling between the same so that thepaper may be fed to the perforating machine'in proper position with respect to the cutting mechainsm thereof without the necessity of adjusting the spool l;y In the construction of the rollers 2 and 3 the cutting ends of the roller 3 desirably form separable parts 31 that are in screw connection with the balance of the roller 3, lool; nuts 32 serving to hold the roller sections 31L in proper position with respect to the balance of the roller 3. The flanges 7 are likewise separately formed and are in screw connection with the ybalance of the rollers 2, these flanges 7 abutting against the interposed section of the roller 2 where they are in Xed position. The space lbetween the cutting flanges 7 determines the width of the paper and the roller ends 31 are positioned so as to be in nice cutting relation with the flanges 7 to cut the paper exactly the width of the space between the flanges 7.

After the paper has been perforated by the perforating machine it is wound upon spools, the faces of the paper rolls being very smooth as a consequence of the employment of the device of my invention. Any -suitable means may be employed for directing the strips 8 away from the trimmed por-v tion of the sheet, such as the directing iingers 11 shown in Figs. l and 3.

Whilel have herein shown and particularly described the preferred embodiment of my invention I do not wish to be limited to the precise details of construction shown as changes may readily be made without departing from the spirit of my invention,

Having thus described my invention claim as new and desire to secure by Letters Patent the following A l. A machine for trimming the longitudinal vedges of sheet material including freely mounted rollers between which the sheet to be cut is passed and which engage said sheet-to be driven thereby, one of said rollers being so located with respect to the passing sheet as to forma bight therein,

the other roller engaging thelsheet at and i without the bight, theV bight` forming roller having a cutter portion at each end of a diameter similar to that ofthe balance of the bight forming roller-'and underlying the other roller, while the roller without Vthe bight carries cutters coperating with the aforesaid cutter portions of larger diameter than `this outer rollen-the bight forming roller and its cutter portions being together interposed between the cutters carried by the companion roller, two of the cooperating cutting elements being relatively adjustable longitudinally of therollers to determine the widthv of the'sheet to be cut.

2. A machine for-trimming the longitudinal edgesof sheet material including freely mounted rollers between which the sheet to be 'cut' is passed and which engage said sheet to be drivenv thereby,'one of said rollers being so located with respect to thepassing sheet as to form a bight therein, the other roller engaging the sheet at and withoutthe bight, one of these rollers having a cutter portion at each end of a diametery similar to that of the balance of this roller, while .the

other roller carries cutters coperating with n 3. A machine for trimming the longitudi-` nal edges of sheet material including freely Y mounted rollers between whichthe sheet to be cut is passed and which engage said sheet .to bedriven thereby, one of said rollers being so located with respect tothe passing i sheet as to form a bighttherein, the other roller engaging the sheet at and without the bight, the bight forming roller having a i cutter portion at each end of a :diameter similar to that of the balanceV of the. bight f i forming roller and underlying *thev other roller, while the roller without the bight carries cutters coperating with the aforesaid cutter portions of larger diameter than Qthis outer roller, the bight forming roller fand its cutter portion being together interposed between the cutters carried by the companion roller. y

4. A machine for trimming the longitudinal edges of sheet material including freely mounted rollers between which the sheet to be cut is passed and which engage said sheet to be driven thereby, one of said rollers bei ing so located with respect to the passing sheet as to form a bight therein, the other roller engaging the sheet at and without the bight, one of these rollers having a cutter portion at each end of a diameter similar to that of the balance of this roller, while the other roller carries cutters coperating with the aforesaid cutter portions of larger diaineter than this other roller, the first roller and its cutter portions being together interposed between the cutters carried by the companion roller.

In witness whereof, I hereunto subscribe my name this twenty fourth day of January CHARLES L. LILLEBERG. Witnesses:

G. L. CRAGG, E. L.` WHITE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of .'Latents,` Washington, D. C. 

